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How to prevent an IP from being blacklisted

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6218
Printed Date: 15 November 2025 at 10:23am


Topic: How to prevent an IP from being blacklisted
Posted By: hbr
Subject: How to prevent an IP from being blacklisted
Date Posted: 27 August 2007 at 9:18am
I would like some IPs would be never blacklisted, but emails from them would by scanned. What shall I do?


Replies:
Posted By: Desperado
Date Posted: 27 August 2007 at 11:06am

If they are being black-listed by dnsbl servers, then you may have an impossible issue.  If they are black-listed by either you honeypot emails or the ip-cache then there is a setting in the INI file:

DoNotAddIPToHoneypot=x.x.x.x,y.y.y.y,z.z.z.z

It is not clear (to me) how many entries you can put in that list however.


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The Desperado
Dan Seligmann.
Work: http://www.mags.net
Personal: http://www.desperado.com

Posted By: hbr
Date Posted: 28 August 2007 at 4:40am
It is a little bit different situation. We use SF as a mail filter in front of our mail server. But we are not satisfied with % of spam filtered, so we are trying a supplement solution. The new solution is in front of SF server.
Sometimes an email pass through and is recognized by SF as spam. And SF places our new antispam filter's IP in blacklist cache.
So I need an IP would never be blacklisted by SF.

Posted By: Desperado
Date Posted: 28 August 2007 at 9:29am
My answer still applies.  The DoNotAddIPToHoneypot= will prevent the first servers IP from beitn added to the IPCache.  We have a backup server that would have the same issue you describe and this is how it is solved.

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The Desperado
Dan Seligmann.
Work: http://www.mags.net
Personal: http://www.desperado.com

Posted By: LogSat
Date Posted: 28 August 2007 at 6:10pm
hbr,

Please also note that if SpamFilter does not "see" the original IP address of the sender, many of the filters used by SpamFilter will not work correctly. Somem may miss spam emails, and some others, like the SPF filter, will incorrectly mark good emails as spam as the sender' IP will not match the actual IP seen by SpamFilter.


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Roberto Franceschetti

http://www.logsat.com" rel="nofollow - LogSat Software

http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP


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